/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 12:59:31,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 12:59:31,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 12:59:31,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 12:59:31,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 12:59:31,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 12:59:31,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 12:59:31,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 12:59:31,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 12:59:31,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 12:59:31,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 12:59:31,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 12:59:31,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 12:59:31,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 12:59:31,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 12:59:31,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 12:59:31,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 12:59:31,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 12:59:31,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 12:59:31,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 12:59:31,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 12:59:31,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 12:59:31,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 12:59:31,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 12:59:31,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 12:59:31,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 12:59:31,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 12:59:31,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 12:59:31,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 12:59:31,810 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 12:59:31,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 12:59:31,813 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 12:59:31,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 12:59:31,813 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 12:59:31,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 12:59:31,813 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 12:59:31,814 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 12:59:31,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 12:59:31,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 12:59:31,815 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 12:59:31,815 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 12:59:31,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 12:59:31,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 12:59:31,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 12:59:31,816 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 12:59:31,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 12:59:31,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 12:59:31,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 12:59:31,817 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 12:59:31,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 12:59:31,818 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:59:31,818 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 12:59:31,818 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 12:59:31,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 12:59:31,818 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 12:59:31,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 12:59:31,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 12:59:31,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 12:59:31,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 12:59:32,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 12:59:32,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 12:59:32,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 12:59:32,258 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 12:59:32,258 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 12:59:32,260 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-04 12:59:32,335 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d7ec8c03/d373cb28e5af4edc8ffc6f26b70eb861/FLAG34bc48968 [2020-09-04 12:59:32,882 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 12:59:32,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-04 12:59:32,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d7ec8c03/d373cb28e5af4edc8ffc6f26b70eb861/FLAG34bc48968 [2020-09-04 12:59:33,185 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d7ec8c03/d373cb28e5af4edc8ffc6f26b70eb861 [2020-09-04 12:59:33,197 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 12:59:33,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 12:59:33,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:33,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 12:59:33,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 12:59:33,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b36a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33, skipping insertion in model container [2020-09-04 12:59:33,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 12:59:33,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 12:59:33,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:33,528 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 12:59:33,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 12:59:33,680 INFO L208 MainTranslator]: Completed translation [2020-09-04 12:59:33,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33 WrapperNode [2020-09-04 12:59:33,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 12:59:33,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 12:59:33,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 12:59:33,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 12:59:33,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... [2020-09-04 12:59:33,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 12:59:33,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 12:59:33,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 12:59:33,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 12:59:33,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 12:59:33,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 12:59:33,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 12:59:33,818 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-04 12:59:33,819 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-09-04 12:59:33,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 12:59:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 12:59:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 12:59:33,819 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-04 12:59:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 12:59:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 12:59:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 12:59:33,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 12:59:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 12:59:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 12:59:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-09-04 12:59:33,821 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 12:59:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 12:59:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 12:59:33,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 12:59:34,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 12:59:34,278 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-04 12:59:34,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:34 BoogieIcfgContainer [2020-09-04 12:59:34,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 12:59:34,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 12:59:34,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 12:59:34,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 12:59:34,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 12:59:33" (1/3) ... [2020-09-04 12:59:34,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee115a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:34, skipping insertion in model container [2020-09-04 12:59:34,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 12:59:33" (2/3) ... [2020-09-04 12:59:34,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee115a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 12:59:34, skipping insertion in model container [2020-09-04 12:59:34,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 12:59:34" (3/3) ... [2020-09-04 12:59:34,292 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-09-04 12:59:34,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 12:59:34,314 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 12:59:34,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 12:59:34,364 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 12:59:34,364 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 12:59:34,364 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 12:59:34,364 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 12:59:34,364 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 12:59:34,364 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 12:59:34,364 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 12:59:34,365 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 12:59:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-09-04 12:59:34,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 12:59:34,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:34,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:34,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:34,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:34,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-09-04 12:59:34,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:34,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464133101] [2020-09-04 12:59:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:34,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 12:59:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 12:59:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:34,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 12:59:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 12:59:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 12:59:34,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464133101] [2020-09-04 12:59:34,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 12:59:34,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 12:59:34,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192925983] [2020-09-04 12:59:34,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 12:59:34,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 12:59:34,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 12:59:34,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 12:59:34,741 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-09-04 12:59:34,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 12:59:34,984 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-09-04 12:59:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 12:59:34,987 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-04 12:59:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 12:59:35,000 INFO L225 Difference]: With dead ends: 112 [2020-09-04 12:59:35,001 INFO L226 Difference]: Without dead ends: 55 [2020-09-04 12:59:35,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 12:59:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-04 12:59:35,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-04 12:59:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 12:59:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-09-04 12:59:35,062 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-09-04 12:59:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 12:59:35,063 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-09-04 12:59:35,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 12:59:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-09-04 12:59:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-04 12:59:35,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 12:59:35,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 12:59:35,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 12:59:35,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 12:59:35,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 12:59:35,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-09-04 12:59:35,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 12:59:35,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254999775] [2020-09-04 12:59:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 12:59:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:59:35,174 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:59:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 12:59:35,274 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 12:59:35,333 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-09-04 12:59:35,334 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 12:59:35,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 12:59:35,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 12:59:35 BoogieIcfgContainer [2020-09-04 12:59:35,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 12:59:35,396 INFO L168 Benchmark]: Toolchain (without parser) took 2195.96 ms. Allocated memory was 141.0 MB in the beginning and 234.9 MB in the end (delta: 93.8 MB). Free memory was 102.7 MB in the beginning and 200.5 MB in the end (delta: -97.8 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,397 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 12:59:35,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.48 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 181.4 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,399 INFO L168 Benchmark]: Boogie Preprocessor took 64.34 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 178.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,400 INFO L168 Benchmark]: RCFGBuilder took 537.21 ms. Allocated memory is still 204.5 MB. Free memory was 178.8 MB in the beginning and 150.6 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,401 INFO L168 Benchmark]: TraceAbstraction took 1107.95 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 150.0 MB in the beginning and 200.5 MB in the end (delta: -50.5 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. [2020-09-04 12:59:35,405 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 481.48 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 181.4 MB in the end (delta: -78.9 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.34 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 178.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 537.21 ms. Allocated memory is still 204.5 MB. Free memory was 178.8 MB in the beginning and 150.6 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1107.95 ms. Allocated memory was 204.5 MB in the beginning and 234.9 MB in the end (delta: 30.4 MB). Free memory was 150.0 MB in the beginning and 200.5 MB in the end (delta: -50.5 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934602, \old(Zero_fmod)=8589934599, \old(Zero_fmod)=8589934595, one_fmod=1, Zero_fmod={3:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=8589934594, Zero_fmod={3:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=8589934594, one_fmod=1, Zero_fmod={3:0}] [L109] __int32_t ix; VAL [\old(x)=8589934594, one_fmod=1, x=8589934594, Zero_fmod={3:0}] [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=8589934594, \result=1, ix=2139095039, one_fmod=1, x=8589934594, Zero_fmod={3:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934594, Zero_fmod={3:0}] [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, x=8589934594, y=8589934593, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, sx=-1, x=8589934594, y=8589934593, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=8589934594, \old(y)=8589934593, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=8589934594, y=8589934593, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934592, one_fmod=1, x=8589934594, y=8589934593, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=8589934592, x=8589934594, y=8589934593, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934592, x=8589934594, y=8589934593, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...